noun, suffix, counter
infusing (tea); infusion
Bound form used in compounds and as a counter for infusions of tea. Not used as a standalone noun in modern Japanese.
このお茶は二煎目が一番おいしい。
This tea is best on the second infusion.
急須に茶葉を入れて一煎目を注ぐ。
Put tea leaves in the pot and pour the first infusion.